BALAKRAM, I. C. S. The General Equation in the Algebra of Logic. The Journal of the Indian Mathematical Society, [S. l.], v. 3, n. 6, p. 213–218, 1911. DOI: 10.18311/jims/1911/17796. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/17796. Acesso em: 2 may. 2024.